{3-[2-(3-amino-6-methyl-2-oxopyridin-1(2H)-yl)acetylamino]-6-methyl-2-oxopyridin-1(2H)-yl}acetic acid tert-butyl ester 、
4-[7-(3-carboxy-propoxy)naphthalen-2-yloxy]butyryl-Val-Leu-Val-OMe 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 24.0h,
以34%的产率得到methyl (2S)-2-[[(2S)-2-[[(2S)-2-[4-[[7-[4-[[1-[2-[[1-(2-tert-butoxy-2-oxo-ethyl)-6-methyl-2-oxo-3-pyridyl]amino]-2-oxo-ethyl]-6-methyl-2-oxo-3-pyridyl]amino]-4-oxo-butoxy]-2-naphthyl]oxy]butanoylamino]-3-methyl-butanoyl]amino]-4-methyl-pentanoyl]amino]-3-methyl-butanoate